Get songs endpoint (#162)

* Added test_migrations directory

* Added skeleton endpoint to get songs

* Code formatting

* Added more code

* Added TODO

* Code formatting

* Updated album in album json file

* Changing directory name

* Test refactoring

* Forgot to include this

* Added test for getting songs and added function for test_migrations

* Adding test migrations

* Removing placeholder

* Renamed

* Renamed

* Fixed what caused test failure

* Created migration with cli command

Creating test_migrations/20250725213448_migration_name.sql

* Migration changes

* Removing migration

* More migration changes

* Made endpoint available

* Migration changes

* Got the test to work

* Cleaned up test

* Code formatting

* More cleanup

* Version bump

.sqlxconfig

@@ -0,0 +1,8 @@
+{
+  "dev": {
+    "migrations": "./migrations"
+  },
+  "test": {
+    "migrations": "./test_migrations"
+  }
+}